How to replace the toilet ventilator

How to repair the broken exhaust fan in the bathroom?

Maintenance of Ventilation Fan How to repair the exhaust fan in the bathroom if it is broken?

The value of the exhaust fan in the bathroom is relatively low. Generally speaking, the exhaust fan needs no maintenance after it has been used for more than 3 years. First, there is a lot of dust inside the exhaust fan, which reduces the operating efficiency of the exhaust fan. Second, the plastic material used in general exhaust fans is easy to crack after 3 years, and it is more likely to be damaged again after maintenance. Thirdly, the lubricating oil in the exhaust fan motor has achieved the urban effect. Lubricating oil needs to be added again for lubrication. If the exhaust fan bearing is worn or the exhaust fan impeller is eccentric, the exhaust fan is prone to generate noise and vibration, and it is very easy to burn out the motor.

If it must be repaired, we can consider replacing the new motor and centrifugal impeller of the same model at the same time. In this case, the exhaust fan can be used for two years, and electrostatic electromechanical technology can provide you with maintenance suggestions for the exhaust fan products.

If the pipe ventilator is noisy after installation, the main reasons can be summarized as follows:

First, the selection is wrong, and the exhaust fan with large air volume is selected in a small space, which has great noise, vibration and negative pressure. This choice must be suitable when purchasing exhaust fans, not the bigger the better.

Second, poor ventilation and loud noise. Generally speaking, the exhaust fans on the market now have a characteristic, that is, poor ventilation. When the rotation is blocked, the motor speed will increase, the vibration will increase and the noise will increase. This requires checking whether the air duct is unblocked and whether the check valve works normally.

Third, the exhaust fan and the ceiling vibrate, which is a coincidence. Shock absorption only needs some soft materials, and changing the vibration point of the exhaust fan can solve the problem of loud noise. Electrostatic electromechanical technology can provide you with the choice of exhaust fan products and the solution of excessive noise.

Firstly, the structure and principle of exhaust fan are briefly introduced.

Its main components are switch, fan and motor.

About motors: Most motors are single-phase motors, which are started by starting capacitors and controlled by switches to start, stop or reverse.

Maintenance method:

1. If the fan only hums, the motor capacitor is damaged or the fan is stuck, or the motor bearing is corroded, rusted and stuck. If it is the first two reasons, you can directly replace the capacitor or take away foreign objects. If the bearing is damaged, it is recommended to replace the exhaust fan. After all, the bearing is damaged for a long time, and it is also very troublesome to replace the bearing.

2. If there is no sound when the fan turns on the switch, check whether the switch is damaged. After cutting off the power supply, use a multimeter to measure whether the switch resistance can be connected. If the resistance is always infinite, the switch is broken.

3. Use a multimeter to measure whether the voltage is normal. The normal voltage is about 220 volts.